JPH0616336Y2 - Rod for opening and closing doors such as watches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a door opening / closing rod for a watch or the like.

[Prior Art] Conventionally, there is a so-called cuckoo clock in which the doors open both sides at the hour and the dove sticks out from the front. issue)
Is proposed. In this device, a slider provided on the frame and a door that is swingably supported by the frame on the outer side are connected to each other by a door link made of a single body. The door is opened and closed by the door link pushing the door outward when the slider moves forward, and when the slider retracts, this time the door link pulls the door inward so that the door stays in place. is there. A limit switch controls the stop position when the slider moves forward and backward.

[Problems to be Solved] As described above, in the case where the opening and closing of the door is controlled by the door link and the limit switch made of a single body, in order to close the door at the correct position, the limit switch must be set correctly, It is strictly required to be mounted in the correct position and to be assembled accurately in the mutual positional relationship with the slider and the door. If this accuracy is inferior, the door cannot be closed tightly, resulting in a half-opened state, impairing the appearance of the timepiece. On the contrary, the door may be closed too tightly, or the slider may move excessively due to the inertial force of the motor even after the limit switch is turned off, causing the door link to pull the door more than necessary, making it impossible for the door and drive motor. If the door is opened again, it will be difficult to open it (deadlock) and other malfunctions will occur.

An object of the present invention is to ensure that a door such as a clock is always closed at an accurate position without requiring strict assembling accuracy and without applying excessive force.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a door opening / closing rod of a timepiece or the like of the present invention has a standing bent portion formed by bending one end and a tip of the standing bent portion. And a tongue portion having a width smaller than that of the standing bending portion and a tip of the tongue portion,
The tongue portion has an engaging portion having a width slightly larger than that of the tongue portion, and a hole formed inward from the standing bending portion in the shape of a long groove and having a width slightly greater than that of the tongue portion. A pair of connecting members whose standing bending parts are opposed to each other by inserting the above into the hole and projecting the engaging part, and a compression spring which is mounted between the two opposing bending parts. It is a thing.

[Operation] When the rod moves forward to open the door, the tongue of each connecting member is in contact with the inner surface of each hole, and the door is pushed out without expansion and contraction of the rod. When closing the door, when the rod is pulled, a force is transmitted from one connecting member to each standing bending portion to the other connecting member via the compression spring, so that the door is pulled inward to close the door. Even if the door is in the normal position, if the rod still has a tensile force, the force causes the compression spring between the two standing bends to compress and extend the rod, and the extra force is absorbed by the spring. This prevents excessive force from acting on the door.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the door opening / closing rod 1 includes a pair of connecting members 2,
3 and a compression spring 4 mounted between the connecting members 2 and 3.

As shown in FIGS. 2 and 3, both connecting members 2 and 3 are formed by pressing a metal plate into the same shape. One end of each of the connecting members 2 and 3 is formed to have a predetermined width over a predetermined length, and standing bent portions 2a and 3a bent at 90 degrees from the end at a predetermined position are provided. Ring-shaped support portions 2b and 3b are formed at the other end. Standing bent portions 2a, 3
At the tip of a, the tongue portions 2c, 3 having a width smaller than this are provided.
c is formed. Further, at the tips of the tongues 2c and 3c, engaging portions 2d and 3 having a width slightly larger than that of the tongues are formed.
d is formed. Standing bending part 2 as shown in Figs.
Long groove-shaped holes 2e, 3e are provided from a, 3a toward the other end by a predetermined length. The width of the holes 2e, 3e is slightly wider than the width of the tongues 2c, 3c.
It is formed narrower than d and 3d.

In both of the connecting members 2 and 3, the supporting portions 2b and 3b are located on the outer end side, the holes 2e and 3e face each other, and the standing bending portion 2
a and 3a are holes 2e of the connecting members 2 or 3 which are opposite to each other.
Alternatively, it is bent toward 3e. And holes 2e, 3
By inserting the tongue portions 3c and 2c of the mating coupling member into e, and projecting the respective engaging portions 3d and 2d in the surface direction opposite to the facing surfaces of the coupling members 2 and 3, the coupling member 2 and 3 Comrades are connected irremovably. This makes the second
As shown in the figure, both connecting members 2 and 3 are
3a and holes 2e, 3e face each other, and a void corresponding to the height of the bent portions 2a, 3a is formed between them.

As shown in FIG. 3, a compression spring 4 is mounted in this space. As shown in FIG. 3, a part of the outer circumference of the compression spring 4 is fitted into the holes 2e and 3e, so that the compression spring 4 cannot be escaped from this gap and, at the same time, as shown in FIGS. Both ends of the spring 4 exert a spring force on the facing surfaces of the opposing bent portions 2a and 3a, so that the tongues 2c and 3c of the connecting members 2 and 3 have longitudinal directions of the holes 2e and 3e. It is positioned by contacting the inner end surface of the. This state of the rod 1 is the shortest state. When the rod 1 applies a force outwardly from both the supporting portions 2b and 3b, the compression spring 4 is compressed in response to this force, and the tongue portion 2
The c and 3c slide along the holes 2e and 3e in a direction in which they approach each other, and the entire length of the rod 1 gradually increases.

A rod 1 according to the present invention applied to open and close a door of a timepiece will be described with reference to FIGS.

As shown in FIG. 4, a slider 6 having a decoration such as a pigeon (not shown) attached to the frame 5 of the timepiece is provided. The female screw portion 6 b provided on the slider 6 is screwed onto the lead screw 7. The lead screw 7 is rotatably supported by the frame body 5, and the rotation of the drive wheel 9 a of the drive motor 9 is transmitted via the belt 8. The slider 6 can be moved back and forth by the rotation of the lead screw 7.

In front of the frame body 5 (below the drawing), doors 10 and 1 for opening both sides are provided.
0 is attached. One end of each of the doors 10 and 10 is swingably supported by the frame body 5, and the other end is in contact with a stopper 11 fixed to the frame body to be in a closed state. The rod 1 of the present invention comprises support pieces 6a, 10a mounted on the lower surface of the slider 6 and the inner surface of the door 10, respectively, and a support portion 3b,
They are attached so as to be swingable by 2b.

In the above configuration, the door is closed (4th illustration)
Drive motor 9 from the timepiece machine body (not shown)
When the drive motor 9 is activated to rotate the drive gear 9a, the lead screw 7 causes the slider 6 to start moving forward. Along with this, the rods 1 and 1 are pushed to push the doors 10 and 10 outwardly, and the slider 6 appears to the front side in the meantime. When the door is further opened and the state as shown in FIG. 5 is reached, a limit switch (not shown) operates to stop the drive motor 9, and this state is maintained for a while.

When a predetermined time has elapsed, a reverse drive signal is sent to the drive motor 9 this time, the drive motor 9 rotates, and the slider 6 begins to retract. When the slider 6 retreats and returns to the state shown in FIG. 4, another limit switch (not shown) operates and the drive motor 9 stops.

Due to the mounting error of the limit switch to the frame 5, the door 1
The limit switch may not be turned off even if the insides of 0 and 10 come into contact with the stopper 11, so that the slider 6 is installed on the doors 10 and 1.
Even if 0 contacts the stopper 11, it still moves backward. Also,
Even if the limit switch is mounted at the correct position on the frame body 5, the drive motor 9 is operated after the limit switch is activated.
Due to the inertia of the slider 6,
Even if it touches, it still moves backward.

At this time, according to the present invention, the rod 1 attached to the support piece 6a
The supporting portion 3b of the rod 1 moves together with the slider 6, while the supporting portion 2b of the rod 1 attached to the supporting piece 10a is stopped because the door 10 is stopped. At this time, the bent portion 3a
Presses the compression spring 4 in the direction of the bent portion 2a, and the compression spring 4 is compressed. Therefore, the doors 10 and 10 are stoppers 1.
The movement of the slider 6 after coming into contact with 1 is replaced with the deformation of the compression spring 4. As a result, an unreasonable force is not applied to the rods 1, 1, the drive motor 9, and the doors 10, 10, so that the doors 10, 10
Prevent deadlock of. Therefore, the positioning adjustment of the limit switch is not necessary, and the assembly is easy.

The method for connecting the rod 1 to the slider 6 and the door 10 is not limited to this embodiment, and the shape of the rod 1 is not limited to this embodiment.

In the present embodiment, the case where the invention is applied to a cuckoo clock and the like is described, but the invention is not limited to cuckoo clocks and the like, and is widely applicable to general mechanical clocks, and can also be applied to open and close doors other than clocks. is there.

[Effects] As described above, according to the present invention, even if the slider moves after the door stops, the rod is not stretched to pull the door forcibly, and extra force is applied to the rod, door, drive motor, etc. It is possible to prevent these damages and prevent deadlock of the door. Further, as a result, the assembly accuracy for providing the limit switch is not strictly required, and the assembly is easy and the cost can be reduced.

[Brief description of drawings]

1 is a plan view, FIG. 2 is a front view, FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 2, and FIGS. 4 and 5 are the present invention. FIG. 4 is a plan view of an essential part of a timepiece to which is applied, FIG. 4 shows a state in which the door is closed, and FIG. 5 shows a state in which the door is open. 2, 3 ... Connection member, 2a, 3a ... Standing bent portion, 2c, 3c ... Tongue portion, 2d, 3d ... Engaging portion, 2e, 3e ... Hole, 4 ... Compression spring.

Claims (1)

[Scope of utility model registration request] 1. A standing bending portion formed by bending one end, a tongue portion provided at a tip of the standing bending portion and having a width smaller than that of the standing bending portion, and a tip of the tongue portion. An engaging portion that is provided and has a width slightly larger than the tongue portion, and a hole that is formed in a long groove inward from the standing bent portion and that has a width slightly larger than the tongue portion. And a pair of connecting members having the bent portions facing each other by inserting the tongue portion into the hole and projecting the engaging portion, and between the facing bent portions facing each other. A rod for opening and closing a door of a clock or the like, which is characterized by comprising a compression spring attached to the.